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u-boot/board/BuR/kwb/board.c
Hannes Petermaier 8db622cdd4 board/BuR/kwb: Support modify bootcmd through reset-controller 
For some cases it is necessary to modify temporaly the bootcommand.
This can be done by writing into the Scratchregister a specific value:

* 0xCC - modify bootcmd "run netboot"
* 0xCD - modify bootcmd "run netscript"
* 0xCE - modify bootcmd "run mmcboot"

the environment in flash is NOT overwritten.

Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
2015-03-05 20:13:20 -05:00

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/*
* board.c
*
* Board functions for B&R KWB Board
*
* Copyright (C) 2013 Hannes Petermaier <oe5hpm@oevsv.at>
* Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
*
* SPDX-License-Identifier: GPL-2.0+
*
*/
#include <common.h>
#include <errno.h>
#include <spl.h>
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
#include <asm/arch/omap.h>
#include <asm/arch/ddr_defs.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mem.h>
#include <asm/io.h>
#include <asm/emif.h>
#include <asm/gpio.h>
#include <i2c.h>
#include <power/tps65217.h>
#include "../common/bur_common.h"
#include <lcd.h>
/* -------------------------------------------------------------------------*/
/* -- defines for used GPIO Hardware -- */
#define ESC_KEY (0+19)
#define LCD_PWR (0+5)
#define PUSH_KEY (0+31)
/* -------------------------------------------------------------------------*/
/* -- PSOC Resetcontroller Register defines -- */
/* I2C Address of controller */
#define RSTCTRL_ADDR 0x75
/* Register for CTRL-word */
#define RSTCTRL_CTRLREG 0x01
/* Register for giving some information to VxWorks OS */
#define RSTCTRL_SCRATCHREG 0x04
/* -- defines for RSTCTRL_CTRLREG -- */
#define RSTCTRL_FORCE_PWR_NEN 0x0404
#define RSTCTRL_CAN_STB 0x4040
#define VXWORKS_BOOTLINE 0x80001100
#define DEFAULT_BOOTLINE "cpsw(0,0):pme/vxWorks"
#define VXWORKS_USER "u=vxWorksFTP pw=vxWorks tn=vxtarget"
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_SPL_BUILD)
/* TODO: check ram-timing ! */
static const struct ddr_data ddr3_data = {
.datardsratio0 = MT41K256M16HA125E_RD_DQS,
.datawdsratio0 = MT41K256M16HA125E_WR_DQS,
.datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
.datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
};
static const struct cmd_control ddr3_cmd_ctrl_data = {
.cmd0csratio = MT41K256M16HA125E_RATIO,
.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
.cmd1csratio = MT41K256M16HA125E_RATIO,
.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
.cmd2csratio = MT41K256M16HA125E_RATIO,
.cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
};
static struct emif_regs ddr3_emif_reg_data = {
.sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
.ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
.sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
.sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
.sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
.zq_config = MT41K256M16HA125E_ZQ_CFG,
.emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
};
static const struct ctrl_ioregs ddr3_ioregs = {
.cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
.dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
};
#define OSC (V_OSCK/1000000)
const struct dpll_params dpll_ddr3 = { 400, OSC-1, 1, -1, -1, -1, -1};
void am33xx_spl_board_init(void)
{
unsigned int oldspeed;
unsigned short buf;
struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;
/*
* enable additional clocks of modules which are accessed later from
* VxWorks OS
*/
u32 *const clk_domains[] = { 0 };
u32 *const clk_modules_kwbspecific[] = {
&cmwkup->wkup_adctscctrl,
&cmper->spi1clkctrl,
&cmper->dcan0clkctrl,
&cmper->dcan1clkctrl,
&cmper->epwmss0clkctrl,
&cmper->epwmss1clkctrl,
&cmper->epwmss2clkctrl,
&cmper->lcdclkctrl,
&cmper->lcdcclkstctrl,
0
};
do_enable_clocks(clk_domains, clk_modules_kwbspecific, 1);
/* setup LCD-Pixel Clock */
writel(0x2, CM_DPLL + 0x34);
/* power-OFF LCD-Display */
gpio_direction_output(LCD_PWR, 0);
/* setup I2C */
enable_i2c0_pin_mux();
i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
/* power-ON 3V3 via Resetcontroller */
oldspeed = i2c_get_bus_speed();
if (i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC) >= 0) {
buf = RSTCTRL_FORCE_PWR_NEN | RSTCTRL_CAN_STB;
i2c_write(RSTCTRL_ADDR, RSTCTRL_CTRLREG, 1,
(uint8_t *)&buf, sizeof(buf));
i2c_set_bus_speed(oldspeed);
} else {
puts("ERROR: i2c_set_bus_speed failed! (turn on PWR_nEN)\n");
}
pmicsetup(0);
}
const struct dpll_params *get_dpll_ddr_params(void)
{
return &dpll_ddr3;
}
void sdram_init(void)
{
config_ddr(400, &ddr3_ioregs,
&ddr3_data,
&ddr3_cmd_ctrl_data,
&ddr3_emif_reg_data, 0);
}
#endif /* CONFIG_SPL_BUILD */
/*
* Basic board specific setup. Pinmux has been handled already.
*/
int board_init(void)
{
gpmc_init();
return 0;
}
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
const unsigned int toff = 1000;
unsigned int cnt = 3;
unsigned short buf = 0xAAAA;
unsigned char scratchreg = 0;
unsigned int oldspeed;
/* try to read out some boot-instruction from resetcontroller */
oldspeed = i2c_get_bus_speed();
if (i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC) >= 0) {
i2c_read(RSTCTRL_ADDR, RSTCTRL_SCRATCHREG, 1,
&scratchreg, sizeof(scratchreg));
i2c_set_bus_speed(oldspeed);
} else {
puts("ERROR: i2c_set_bus_speed failed! (scratchregister)\n");
}
if (gpio_get_value(ESC_KEY)) {
do {
lcd_position_cursor(1, 8);
switch (cnt) {
case 3:
lcd_puts(
"release ESC-KEY to enter SERVICE-mode.");
break;
case 2:
lcd_puts(
"release ESC-KEY to enter DIAGNOSE-mode.");
break;
case 1:
lcd_puts(
"release ESC-KEY to enter BOOT-mode. ");
break;
}
mdelay(toff);
cnt--;
if (!gpio_get_value(ESC_KEY) &&
gpio_get_value(PUSH_KEY) && 2 == cnt) {
lcd_position_cursor(1, 8);
lcd_puts(
"switching to network-console ... ");
setenv("bootcmd", "run netconsole");
cnt = 4;
break;
} else if (!gpio_get_value(ESC_KEY) &&
gpio_get_value(PUSH_KEY) && 1 == cnt) {
lcd_position_cursor(1, 8);
lcd_puts(
"updating U-BOOT from USB ... ");
setenv("bootcmd", "run usbupdate");
cnt = 4;
break;
} else if ((!gpio_get_value(ESC_KEY) &&
gpio_get_value(PUSH_KEY) && cnt == 0) ||
(gpio_get_value(ESC_KEY) &&
gpio_get_value(PUSH_KEY) && cnt == 0)) {
lcd_position_cursor(1, 8);
lcd_puts(
"starting script from network ... ");
setenv("bootcmd", "run netscript");
cnt = 4;
break;
} else if (!gpio_get_value(ESC_KEY)) {
break;
}
} while (cnt);
} else if (scratchreg == 0xCC) {
lcd_position_cursor(1, 8);
lcd_puts(
"starting vxworks from network ... ");
setenv("bootcmd", "run netboot");
cnt = 4;
} else if (scratchreg == 0xCD) {
lcd_position_cursor(1, 8);
lcd_puts(
"starting script from network ... ");
setenv("bootcmd", "run netscript");
cnt = 4;
} else if (scratchreg == 0xCE) {
lcd_position_cursor(1, 8);
lcd_puts(
"starting AR from eMMC ... ");
setenv("bootcmd", "run mmcboot");
cnt = 4;
}
lcd_position_cursor(1, 8);
switch (cnt) {
case 0:
lcd_puts("entering BOOT-mode. ");
setenv("bootcmd", "run defaultAR");
buf = 0x0000;
break;
case 1:
lcd_puts("entering DIAGNOSE-mode. ");
buf = 0x0F0F;
break;
case 2:
lcd_puts("entering SERVICE mode. ");
buf = 0xB4B4;
break;
case 3:
lcd_puts("loading OS... ");
buf = 0x0404;
break;
}
/* write bootinfo into scratchregister of resetcontroller */
oldspeed = i2c_get_bus_speed();
if (i2c_set_bus_speed(CONFIG_SYS_OMAP24_I2C_SPEED_PSOC) >= 0) {
i2c_write(RSTCTRL_ADDR, RSTCTRL_SCRATCHREG, 1,
(uint8_t *)&buf, sizeof(buf));
i2c_set_bus_speed(oldspeed);
} else {
puts("ERROR: i2c_set_bus_speed failed! (scratchregister)\n");
}
/* setup vxworks bootline */
char *vxworksbootline = (char *)VXWORKS_BOOTLINE;
/* setup default IP, in case if there is nothing in environment */
if (!getenv("ipaddr")) {
setenv("ipaddr", "192.168.60.1");
setenv("netmask", "255.255.255.0");
setenv("serverip", "192.168.60.254");
setenv("gatewayip", "192.168.60.254");
puts("net: had no IP! made default setup.\n");
}
sprintf(vxworksbootline,
"%s h=%s e=%s:%s g=%s %s o=0x%08x;0x%08x;0x%08x;0x%08x",
DEFAULT_BOOTLINE,
getenv("serverip"),
getenv("ipaddr"), getenv("netmask"),
getenv("gatewayip"),
VXWORKS_USER,
(unsigned int) gd->fb_base-0x20,
(u32)getenv_ulong("vx_memtop", 16, gd->fb_base-0x20),
(u32)getenv_ulong("vx_romfsbase", 16, 0),
(u32)getenv_ulong("vx_romfssize", 16, 0));
/*
* reset VBAR registers to its reset location, VxWorks 6.9.3.2 does
* expect that vectors are there, original u-boot moves them to _start
*/
__asm__("ldr r0,=0x20000");
__asm__("mcr p15, 0, r0, c12, c0, 0"); /* Set VBAR */
return 0;
}
#endif /* CONFIG_BOARD_LATE_INIT */
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